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Mason McMillan

Mason McMillan began his legal career with Hall Estill after earning his J.D. from the University of Tulsa College Law in 2022. He is a member of the firm's litigation practice where he assists clients in the areas of oil and gas litigation, easement acquisition and eminent domain, and contract disputes.

While in law school, Mason served as the Executive Editor of the Tulsa Law Review and was named to the Order of Barristers for achievements in mock trial competition. He also earned the Oklahoma Bar Association's Litigation Award and the Robert C. Butler, Jr. Award for excellence in legal scholarship and writing. 

During his time as an undergraduate, Mason was a member of the Northeastern State University football team. Finally, Mason is active in politics having served as both an intern and staff assistant for the Office of U.S Senator James Lankford; an intern for the Office of U.S. Representative Markwayne Mullin; and a field representative for the Kevin Stitt for Governor campaign. 

Further, Mason is a member of Hall Estill's Recruitment & Diversity Committee.

Practice Areas

Litigation

Education & Admissions

Admissions

Nylah Mustafa

Karis Stephen

Ms. Stephen earned her law degree from the University of Pennsylvania Law School with honors in legal writing. While in law school, Ms. Stephen held a law clerk position in the Hearings Unit of Baltimore’s Equal Employment Opportunity Commission, completed an externship with Philadelphia Lawyers for Social Equity, and interned with a plaintiff-side employment law firm in Philadelphia.

During law school, Ms. Stephen was the Community Editor for The Regulatory Review and an Associate Editor for the University Pennsylvania Journal of Law and Social Change. Additionally, Ms. Stephen was also a board member of the Black Law Student Association and the Education and Advocacy Coordinator of If/When/How, a student pro bono organization focused on advancing reproductive rights and justice.

Prior to attending law school, Ms. Stephen was the recipient of a Fulbright Award for which she spent a year as an English Teaching Assistant at a high school in Malaysia.

As an undergraduate at the University of Pennsylvania, Ms. Stephen won an English departmental prize for her thesis titled Black Travel through Time and Space: Music Videos from Sun Ra to Erykah Badu, in which she explored Afrofuturism in the music space. As a member of the Performing Arts Council Executive Board, she headed up the After School Arts Program, a university-funded arts program for youth in West Philadelphia public schools. Ms. Stephen graduated summa cum laude and was selected to be a member of Phi Beta Kappa.

Outside of work, Ms. Stephen is a musician, creative writer, and avid moviegoer.

Alexis Holloway

Alexis focuses her practice on labor and employment law and represents employers in a range of matters, including employment litigation, agency charges, and workplace investigations. 

She drafts cease and desist letters, position statements, and various employment-related agreements, including non-competition and severance agreements. Alexis also supports clients through all phases of the administrative process, including responding to agency investigations and participating in mediations and settlement negotiations. Her previous experience with plaintiff-side employment litigation matters gives her a unique perspective when advising her clients.

Alexis' practice also includes helping employers navigate workplace compliance issues. With an understanding of labor and employment regulations, she develops practical solutions to mitigate risk and promote positive employee relations.

Alexis' hobbies include reading, painting her nails, and traveling. The furthest place she has traveled to is South Africa during a study abroad experience in law school. Outside of work, you can find her at a Pure Barre class or spending time with her friends and family.

Education

Stevenson University

Ashley Lewis

Ashley is a Georgia native. She graduated from Benedict College in 2017, earning a Bachelor’s degree in Political Science. She then obtained her Juris Doctorate degree from Atlanta’s John Marshall Law School in 2021, where she received the Outstanding Graduate Award for demonstrating superior competence, high ethical standards, social conscience, and a commitment to improving the legal system. While attending law school, she interned in-house for a floor plan financing company.

Following law school, Ashley took on diverse roles, including handling post-judgment collection, landlord-tenant, and first-party property insurance matters, achieving favorable outcomes for her clients. In 2025, she transitioned to handling general liability and insurance defense related matters with an insurance defense firm.

Ashley joined Groth, Makarenko, Kaiser & Eidex as an Associate in March 2026, bringing with her familiarity and experience in insurance defense matters.

Ashley lives in Gwinnett County with her spouse and son, Raylen. Outside of the office, she enjoys spending time with her family, watching NFL (Carolina Panthers fan), and trying new cuisines.

Education

Bar Admissions

Memberships